What should you press after dialing 4636. What is the Android engineering menu, secret codes? Parameters configured in the engineering menu

The term “secret codes for Android” refers to such combinations of characters that were originally intended for testing devices on which this operating system is installed.

With their help, developers test phones and tablets before sending them for sale. And their total number reaches several dozen.

Entering a certain sequence allows you to obtain data or perform actions that are not available ordinary users. For example, find out the IMEI identifier, reset the system to factory settings, or check the operation of individual modules.

Features of “secret” ciphers

Many users who are faced with the need to use such commands may wonder about the reason for their secrecy.

First of all, the combination of symbols and numbers got this name because most owners of gadgets running this OS do not need them. And there is no mention of these commands in the instructions.

To use any of them, you need to enter the Phone application in the dialer (green or blue handset on the main screen).

Tablets without a 3G module do not have this option by default. And in order to run the codes the user must download special application, having found it in PlayMarket for the query “Dialer”.

Combinations for any gadget on Android OS

Information sequences allow you to obtain data about various characteristics of the device and its individual elements:

• *#06# – about the IMEI number;
• *#*#4636#*#* – about the battery and Wi-Fi network;
• *#*#44336#*#* – about the firmware, including the CSC number and build date;
• *#*#232338#*#* – about the wireless network address;
• *#34971539# – about the gadget’s cameras;
• *#*#1234#*#* (although *#2222# works much more often) – about the firmware.

By entering *#*#1111#*#* you can get the software version information on the screen.

Introduction *#*#2222#*#* shows information about the board of the smartphone or tablet.

Information about the sensor version will be shown by the code *#*#2663#*#*, about RAM - *#*#3264#*#*, and Bluetooth address data - *#*#232337#*#*.

Commands for verification and tests

There is a separate group for testing the device:

• checking the Google Talk service is provided by the sequence *#*#8255#*#*;
• to check the display operation – *#*#0*#*#*;
• for testing various parts (from camera to microphone) – *#0*#;
• for the audio test - two at once: *#*#0673#*#* and *#*#0289#*#*.

You can check the operation of the backlight and vibration by entering the combination *#*#0842#*#*.

The Wi-Fi wireless network is tested using the command *#*#232339#*#* and an additional *#*#526#*#*.

The GPS sensor is tested by sending the commands *#*#1472365#*#* (for a normal test) or *#*#1575#*#*.

The Bluetooth network is checked via *#*#232331#*#*.

Several more useful commands allow you to test the performance of the screen (*#*#2664#*#*), motion detectors (*#*#0588#*#*) and the GSM module (*#*#7262626#*#*). And entering *#197328640# provides a transition to the service mode.

Dangerous combinations

There are several options, by introducing which you can make serious changes to the system without the ability to return to its original state. These include, for example, *#*#7780#*#* and *2767*3855#.

The first ensures that all settings are reset and user-installed applications are removed, the second command leads to a complete reinstallation of the system.

The combination *#*#7594#*#* allows you to get rid of the shutdown menu - when you press the corresponding button, the tablet or smartphone will automatically turn off without asking the user anything.

Selecting the code *#*#8351#*#* is needed to enable voice dialing registration, and *#*#8350#*#* is needed to disable this mode. The sequence #*5376# is used to erase messages, and several combinations for Android like #*3876#, #*3851# and #*2562# reboot the gadget.

Special codes for products of individual manufacturers

There are several combinations that are suitable only for certain models or brands of gadgets. They can be summarized in a small table.

Besides these, there are other commands. The special Secret Codes application from PlayMarket will help you find them. With its help, you can even detect those that are not on the list.

You should know: Not all of the sequences, even universal ones, will work on every smartphone. The use of a secret combination may be limited by root rights or a self-reinstalled operating system taken not from the official website, but from third-party sources.

Results

Most of them should be used very carefully. Especially those that not only provide some information, but also make changes to the operating system or firmware. When used correctly, engineering combinations can be quite useful.

Today, the market for devices on the Android platform is huge and occupies a significant part among mobile gadgets. Installing special plugins and add-ons can significantly expand the capabilities of an already functional platform. Therefore, Android smartphones contain a lot of information about the system and technical equipment, which is hidden from the eyes of ordinary users. It often happens that manufacturers limit some device functions at the software level in order to limit user access to important system kernel settings. An example is low speaker volume during calls, which is often found in many smartphone models.

Most users of smartphones and tablets based on Android are not aware of the existence of codes for Android, which are called secret, service or engineering. Such codes appeared much earlier than the platform itself and were used on simple mobile phones. Using such codes, you can painlessly interfere with the software shell and control certain functions of the device. Secret codes for Android may be useful in some situations, for example, obtaining additional or hidden information about a smartphone, full reset settings, hardware testing, formatting, etc.

However, you should use these service codes with extreme caution at your own peril and risk, because Some changes made by entering codes are irreversible. The use of secret codes does not affect the device warranty, because These codes are provided by the manufacturer and are used by engineers in service centers during repairs.

All secret codes are entered using the number keys in the dialer. Before using any code for Android, carefully read its description. By using these codes you can get a lot useful information in a simple way about your device.

For ease of perception, we have divided the codes into groups, combining them according to their logical purpose.

Built-in applications.

Combinations in this group allow you to launch built-in applications.

*#*#0588#*#* - launch of the integrated motion sensor.

*#*#273283*255*663282*#*#* - launch built-in file manager, with which you can do backups files.

Receiving the information.

*#06# - shows the IMEI number of the device. Knowledge IMEI numbers useful in case of loss or theft of a smartphone, this is why any operator mobile communications can track the current owner of the device. If the smartphone has two SIM cards, then two IMEI numbers will be displayed.

*#*#0283#*#* - shows information about packet data.

*#*#2663#*#* - shows the touch screen version.

*#*#3264#*#* - shows version random access memory devices (RAM).

*#*#4636#*#* - obtaining information about the phone, battery, usage statistics, testing, as well as other settings and system information.

*#*#8255#*#* - launch GTalk monitoring.

*#*#8351#*#* - Voice Dialer Logging Enabled - enables recording of the last 20 voice calls (not conversations), i.e. records your voice during voice dialing and dialing history in LOG and WAV formats in the /data/data/com.android.voicedialer/app_logdir folder.

*#*#8350#*#* - Voice Dialer Logging Disabled - disables recording of the last 20 voice calls.

*#*#232337#*#* - shows the MAC address of the Bluetooth module.

*#*#232338#*#* - shows the MAC address of the Wi-Fi module.

*#*#34971539#*#* - shows the camera firmware version and general information about the device’s camera.

Device testing.

*#*#0*#*#* - screen test menu.

*#0011# - service menu on Samsung smartphone Galaxy S4.

*#*#526#*#* or *#*#528#*#* or *#*#232339#*#* - WLAN test.

*#*#0289#*#* or *#*#0673#*#* - test of melodies.

*#*#0842#*#* - vibration and display backlight test.

*#*#1575#*#* or *#*#1472365#*#* - GPS test.

*#*#2664#*#* - touch screen test.

*#*#3424#*#* - testing menu on HTC phones.

*#*#232331#*#* - Bluetooth test.

*#*#197328640#*#* - maintenance menu, in which various tests are launched to test the device.

Service functions.

*#*#7594#*#* - setting up the operation of the device’s power button. When you hold down the power button for a long time, a menu with action options is shown (turn off, restart the device, turn on airplane mode, etc.), so this combination allows you to make changes to this menu.

*#*#7780#*#* - reset the device settings to factory settings, but the reset will not affect installed applications and information on the memory card.

*2767*3855# - resetting the device firmware to its factory state, erases all information. The operation cannot be undone.

It is worth noting that not all of the above combinations will work on your smartphone, since the functionality of the codes may depend on the device manufacturer. Using secret codes for Android can help you set up your smartphone or check some of its functions for functionality.

Descriptions of codes can be downloaded from the server if you have an Internet connection, and you can also contribute by writing your description of the combination.

Remember, when working with codes for Android, you must be aware that some combinations can lead to the irreversible destruction of information on your device. We are not responsible for any consequences that may happen to your device after using the above combinations. The information is provided for informational purposes only.

The engineering menu provides access to manual setting the “hardware” part of the smartphone. To enter you need to enter a special code or install an application, but there are a number of features that are worth paying close attention to. If you were unable to enter the engineering menu the first time, then you did not take into account the features of the device. It is worth immediately clarifying that any interference with the operation of the device may lead to its inoperability and loss of warranty.

Hidden capabilities of the system

At the last stages of setting up a smartphone, developers test the system for errors and check the operation of all sensors on the device. Especially for this, Android has a special subroutine built into it - the engineering menu, which provides access to hidden settings of the Android OS and allows you to reconfigure them yourself. In addition, the menu contains detailed information about the device. The full list of menu options is known only to the platform developers, so you should make your changes with caution.

Secret paths of developers

To enter the engineering menu, dial the code *#*#3646633#*#*. On some models, you additionally need to press the call key. It is worth considering the features of phones: for different brands there are different combinations of numbers. The Android version does not affect the functionality of the engineering menu.

Enter a special code to enter the engineering menu

If no problems arise, you will be taken to an additional menu for fine-tuning your smartphone.

Enter the menu subsection

Depending on the system version and processor model, the engineering menu may be incomplete or missing. In the photo above there is a subsection of the menu with elements for testing smartphone sensors, setting up a USB connection, and performing internal and external memory tests.

If it doesn't work out the first time

Not all devices can access the engineering menu. Let's look at a number of common problems and ways to fix them.

Android is a complex Unix-based operating system. If you can’t do something, you haven’t taken into account all the nuances of the functioning of a particular subroutine.

List of special codes

One of the common reasons for blocking entry to the engineering menu is an incorrect special code. The combination of numbers depends not only on the device model, but also on the type of processor. For example, most devices based on the MTK chip are equipped with an engineering menu. If we talk about Qualcomm, not all smartphones based on this platform have an engineering menu built into them. The list of combinations is given in the table. If you don't find the one you need, try entering a different combination.

Table: code options for different Android models

DIY engineering menu

If none of the special codes work, don’t worry. There are many applications on the network with engineering menu functionality. It is worth noting that the MTK prefix in the names eloquently indicates compatibility only with MediaTek processors.

The first option is Mobileuncle MTK Tools. In addition to the necessary set of settings, this program has several additional functions: firmware update, recovery update, GPS receiver enhancement mode and much more.

Mobileuncle MTK Tools provides a set of settings

Another program is MTK Engineering Mode. The program completely replicates the standard engineering menu.

MTK Engineering Mode repeats the standard engineering menu

For those whose device is not equipped with an engineering menu, there is another option: installing third-party firmware. Assemblies from third-party developers often contain a wide range of customization settings.

Where to begin

When you first enter the menu, you can get lost in the jungle of parameters.

Engineering menu settings

Settings open up enormous possibilities for users.

Depending on the hardware platform, some items may not be available or may be missing.

In this section you can configure mobile communication settings.

1. Auto Answer. You can enable or disable automatic answering of an incoming call.
2. Band Mode. Allows for manual mode select the frequency range for the GSM module to operate. You will see all technologies and frequencies for them supported by your smartphone model. If you wish, you can uncheck bands that are not used by your carrier. This will significantly save battery power. To save the settings, press the set button.
3. CFU Setting (Call forwarding Settings). The option enables or disables conditional forwarding. It must be supported by the operator.
4. AT Command Tool. A utility for developers that supports AT commands. This menu item will be of interest to programmers and developers. Using this menu, you can perform various queries directly to the system without visual add-ons.
5. Modem Test. Configuring the compatibility of the “access point” option with various types of connected devices.
6. Network Selecting. Here you can select mobile communication standards (GSM, WCDMA, LTE). For additional energy saving, turn off unused ones.
7. NetworkInfo. Select one or more options to display information about the status of parameters cellular communications. Once selected, open the additional menu (three dots in the upper right corner) and click Check Information. This option is convenient for checking the quality of cellular operator services.
8. GPRS. Setting up a connection to the mobile Internet, selecting an active SIM card (if there are several of them).
9. HSPA Info. Information about the 3G network if supported by your mobile operator.
10. Mobile data service preferred. The Internet will be given priority over voice traffic to increase data transfer speeds. Incoming calls may not go through.
11. Fast Dormancy. Allows you to save battery energy in third generation networks. The option must be supported by your telecom operator.
12. RAT Mode (Phone Info). Allows you to select the priority communication standard. You should change the parameter carefully, it blocks the settings of the Network Selecting item.
13. RF De-sense Test. You can select a frequency range and a specific channel to check the communication quality.
14. SIM ME Lock. This subsection allows you to configure the regional parameters of the GSM module (MNC, NCC) manually.

Photo gallery: mobile communication parameters

We get to the main window of the subsection Enable or disable auto answer Enable or disable conditional forwarding Configure the “Modem” mode Display information from the GSM module Configure Mobile Internet Select the priority of the connection type Configure the operation of the 3G mode Select the type of mobile connection Check the network power Configure regional communication parameters

Wireless interfaces

This section is intended for testing wireless data transmission modules (Wi-Fi, Bluetooth, FM).

1. Bluetooth. A wide range of settings and tests for the module of the same name in order to check the reception and transmission of data, and start the debugging mode.
2. CDS Information. Information about the parameters of wireless interfaces.
3. FM Receiver. Checking the FM module of the device.
4. Wi-Fi. Testing the module for transmitting and receiving information on the specified frequency channel.
5. Wi-Fi CTIA. Recording logs of wireless technology tests.

Photo gallery: wireless data transmission

Select the section for checking the device’s wireless modules Check the bluetooth operating mode Find information about wireless interfaces Setting up the FM module Checking the operation of the WiFi module Writing data about testing the WiFi module to a log file

1. Audio - fine-tuning audio playback parameters.
2. Camera - a set of parameters for taking photos and videos that are not included in the Camera application.
3. Driving Current Camera - takes current readings from the sensor in the camera circuit.
4. CPU Stress Test - performing tests of all subsystems of the central processor.
5. Deep Idle Setting - disable sleep mode in standby mode.
6. Sleep Mode Setting - sleep mode settings.
7. ChargeBattery - View battery information.
8. Sensor - sensor calibration.
9. Multi-Touch - checks the number of available points for simultaneously pressing the screen.
10. Location Engineer Mode - checking the parameters of the GPS module.

Photo gallery: equipment testing

Go to the section for checking electronic components Adjust the volume of the conversation speakers Adjust the camera's power supply Adjust the standby mode Adjust the frequency of the central processor Adjust the sleep mode View information about the battery Configure touch screen Checking the capabilities of the multi-touch function Setting up the GPS module

Adjusting the speaker volume

In the subsection you can adjust the overall volume level, headphone and speakerphone volume.

You should be careful when changing volume settings. All parameters are individual for a specific device model. Incorrect configuration may result in poor hearing performance.

There are a number of general parameters:

1. MaxVol - general volume level. The range of values ​​is from 0 to 160. Than larger number, the higher the volume.
2. Sph - volume during a telephone conversation.
3. Mic - microphone sensitivity.
4. Ring - speaker volume for incoming calls.
5. Media - volume level when watching movies, listening to music and playing games.

Very often, users are unhappy with the speaker volume during a conversation. To improve audibility, go to the Normal Mode menu and change the Sph parameter to 150. If the phone rings quietly when incoming call, then you need to increase the value of the Ring parameter. We advise you not to set the value above 200, as this may damage the speaker. To make you better heard, change the Mic parameter from 100 to 172. This will increase the sensitivity of the speaker.

ROOT is a panacea for a smartphone

On a smartphone without root rights functionality The engineering menu is limited: some items are not displayed, changes made are not saved. For any intervention in the operation of the smartphone, you need open access into the system. Do not forget that obtaining root access can damage your gadget and will void the device warranty. We strongly recommend doing backup important information to a memory card and synchronize with your Google account and remove it to avoid data loss. To unlock full access to the system, you can use one of the existing methods.

Installing the application directly on the device (KingRoot)

Superuser access can be opened from a smartphone using special programs. Let's look at the sequence of operations using the KingRoot program as an example:

After this, you can safely change the parameters in engineering menu, all changes will be saved. If the result is negative, we move on to the next method.

Obtaining superuser rights via PC (Kingo Root)

This method differs in a slightly larger number of preparatory activities:

The engineering menu is used to configure the device and test the operation of the hardware. This is a built-in subroutine of the system, which is an indispensable tool for both experienced users, and for newcomers to the world mobile devices. However, it should be noted that manipulations with the engineering menu can render the gadget inoperative.

Secret codes are certain combinations of symbols, by entering which you can obtain certain information or access to some hidden functions. It is impossible to predict when and in what situation these codes may be needed, but it is better to familiarize yourself with them in advance.

So, secret codes for Android smartphones and other devices will help you find out additional or hidden information about the hardware of your mobile device, perform a full reset, and so on. You should approach their use with caution - often the changes are irreversible, and, for example, after resetting the settings to factory settings, you will have to restore them completely manually. Well, let's look at all the secret codes in order.

*#*#4636#*#*

This code will display on the screen information about the mobile gadget, its battery, battery history, as well as device usage statistics.

*#*#7780#*#*

The code completely resets certain settings to factory settings, including settings Google account, which is stored in the device, settings and data operating system and various installed applications, removes downloaded applications. System applications and programs that are immediately available out of the box, as well as data on the memory card, such as photos, videos, music, and so on, are not removed. Before resetting to factory settings, the user is asked for confirmation, so even if the code is entered incorrectly, it may not be confirmed.

*2767*3855#

Code that is used for factory formatting. This happens complete removal absolutely all files and settings, including those stored in internal memory. This secret code also reinstalls the firmware of the Android device. After its introduction, the only way to prevent unwanted consequences is to quickly remove it. battery from a mobile gadget and restore data using a computer.

*#*#34971539#*#*

Secret code to access the built-in camera of a mobile device. After entering it, access to 4 menus appears: updating the camera firmware (this action is strongly not recommended, very often choosing this option leads to errors or failure of the camera), updating the camera firmware on the memory card, obtaining basic information about the current camera firmware, history of camera firmware updates.

*#*#7594#*#*

Code for changing the actions of pressing the “End Call” or “Enable/Disable” keys. Typically, by default, when you long press the button, a menu appears that provides a choice of actions such as switching to silent mode, airplane mode, or turning off the device. You can change the actions with a normal press to direct shutdown.

*#*#273283*255*663282*#*#*

The code for calling me to copy files, with its help you can back up media data stored in the memory of your mobile device, such as photos, music tracks and so on.

*#*#197328640#*#*

Android secret code for calling the service mode, with which you can run various tests and change charging settings.

*#*#8255#*#*

Launching the GTalk service screen.

*#*#232339#*#* or *#*#526#*#* or *#*#528#*#*

Secret codes for running WLAN tests on Android devices. To run tests, you must press the “Menu” button.

*#*#232338#*#*

This code shows the WiFi MAC address of the mobile device.

*#*#1472365#*#* or *#*#1575#*#*

Code for running GPS device tests

*#*#232331#*#*

Built-in Bluetooth test.

*#*#232337#*#

A code that displays the Bluetooth address of the mobile device.

*#*#4986*2650468#*#*

Code for obtaining information about the firmware of PDAs, smartphones, H/W, RFCallDate.

*#*#1234#*#*

Code for obtaining information about the firmware of smartphones or PDAs.

*#*#1111#*#*

Display FTA SW version.

*#*#2222#*#*

Display of FTA HW version.

*#*#44336#*#*

Display information about the firmware of smartphones, PDA, CSC, Changelist number, built-in time.

*#*#0283#*#*

Launch Packet Loopback.

*#*#0*#*#*

Run the built-in LCD test.

*#*#0673#*#* or *#*#0289#*#*

Code to run the audio test.

*#*#0842#*#*

Secret code for testing the backlight and vibration of a mobile device.

*#*#2663#*#*

Code to display the touch screen version.

*#*#2664#*#*

Code to run touch screen test.

*#*#0588#*#*

Code for performing sensor checks.

*#*#3264#*#*

Displays the RAM version.

*#2663#

Calibrate the screen sensor (press update).

*#2263#

GSM/3G band switching.

Secret codes are quite powerful tools for displaying information and performing certain actions on a smartphone, so you need to use them carefully and wisely. In general, these codes work on most mobile devices running the Android operating system.

Not many people know about the existence of the OS Android menu with advanced device settings - engineering menu . And someone knows, but doesn’t know how to enter it and what to do with it.
In this article we will show how to enter the engineering menu and some of its capabilities.

You can enter the engineering menu simply by entering a special command (but I must add that this method does not work on all Android versions and not on all devices)

Command to enter the engineering menu: *#*#3646633#*#*

Also on some versions of Android the command may work *#15963#* And*#*#4636#*#*

Immediately after entering, the command should disappear and the engineering menu should open. But on some devices you will still need to press the "Call" key

If this method does not have any effect, you can use an alternative!

And it consists of installing the program (which, by the way, is freely available on Google Play) "Mobileuncle MTK Tools 2.4.0"

This program will open access to the engineering menu (that is, it will work similarly to dialing a combination*#*#3646633#*#*)

There are a lot of settings there! There is huge scope for experimentation! Almost EVERYTHING can be debugged and adjusted!

For clarity, let’s briefly look at setting the device’s volume level:

Go to the program ---> select the "Engineer Mode" section

Because We are interested in adjusting the sound level, select ---> "Audio"

And voila, the menu we are interested in opens.

Max Vol - the same for the entire subsection, as a rule, it is set to 150 (you can change 0-160 - it changes if you select the Media item in the subsection).

If in some submenu, for example, Audio - Normal - Sph, the general level is not available for regulation, then enter another submenu, for example, Audio - Normal - Media - there will be an opportunity to adjust the general volume level.

Sub-items:
Sph - volume levels during telephone conversations,
Mic - microphone sensitivity levels,
Ring - ringer volume,
Media - volume when playing music, movies, and games.

Ring volume levels are set in Audio - LoudSpeaker - Ring
Max Vol = 150
Levels: 120 130 145 160 180 200 (starts to wheeze more)

Phone speaker conversation volume levels in Audio - Normal - Sph
Max Vol = 150
Levels: 100 120 130 135 140 145 150

Microphone conversation volume levels in Audio - Normal - Mic
Levels: 100 172 172 172 172 172 172

Media volume levels are set in Audio - LoudSpeaker - Media

Levels: 110 130 160 190 210 230 250

All the same can be configured for the Headphone mode, by analogy:

Speakerphone volume levels are set in Audio - LoudSpeaker - Sph
Max Vol = 150 (it is the same for the entire section)
Levels: 80 100 110 120 130 140 150 (more wheezing starts)

Now all volumes are adjusted within adequate ranges.
If you are not satisfied with the volume levels, you can set your values ​​(the higher the value, the greater the volume when adjusting with the volume keys, or the greater the sensitivity of the microphone)

By analogy, you can configure most sections! Experiment!